Charging valve



i JOHN o.

' refrigerant. Y

Patented Oct. 27, 1925.

UNITED STATES Application filed Novemberl aimprovements invalves and the objects of f the invention are to providea valve which is particularly adaptedfor use in connection with refrigerating systems, said valve being utilized `in charging the system with the compressible refrigerant.

VFurther objects of the inventionr are to provide a vvalve adapted to be connected to a compressor and having a plurality of extensions or'nipples adapted to `receive variou's connectionsnecessary tol placethe refrigerating system with which Vsaid compressor'is adapted in operative condition.

' With these and other objects i'n view, my invention consists incertain novel'features of construction andarrangementof parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in whichf i Figure l is a top plan View of the valve;

Figure 2 is a vertical cross section taken on lines 2 2 of Figure 1.

Figure 3 is a horizontal cross section taken through the valve.

Figure l is a' perspective detailview of' the valvefste'm. y l

Figure A5A is a top plan view showing the valve connected to charge the system with` In preparing the yrefrigerating system of thef'type using compressible refrigerant "in condition for operating, 1t is irst necessary before admitting the Yrefrigerant lthereinto to rid said system of the air and produceY vacuum therein.A In order Ato effect these exhausting and charging operations in an eiicient and satisfactory manner, I provide a 'valve which is ,connected to the inlet of the compressor and is provided with a plu! rality of nipples. or extensions to ,which can beconnected, respectively, the return pipe PATENT OFFICE.

CARREY, or s'r. LOUIS, MISSOURI, AssIGNo-R To CARREY ROTARY. ENGINE- coMPANY, or sfr.k LOUIS, MISSOURI, A CORPORATION or MISSOURI,

' l CHARGING VALVE.

4,1924. serial No. 747,563.

*fof the yrefrigerating system, an exhaust* and charging connection, and a combination vacuum andV pressure gage. A regulating valve is lprovided by means of which the exhaust and discharge connection can be shut l at the appropriate moment without 1disturbing the other connections.

' Referring by lnumerals to the accompanying drawings, l() indicates ay body portion of the valve, said body portion being provided With a chamber ll with which com municates a longitudinally disposed bore 12 formed in a tubular extension 14 which is threaded at itsa'end and adapted lto be screW-seatedfin the inlet of a compressor vwall A. Extending laterally from body l0` is a tubular extension 15 having a longitudi'- nally disposed bore-16 which communicates with chamber l1. Extension 15 is adapted to be connected to4 the end of'a return pipe 17' of the refrigerating system and isheld p-re-ferablyin position bya' cap 18 which is threaded onsaid' extension and clamps the Uflared end l7= of said pipe vto taperedv end or nozzle 15a of extension 15, 'f

Body portion 10 is provided with .a lateral extenslon- 19', preferably disposed on the same horizontal plane with and at I right angles to extension 17.` This extension 19 is provided with a bore 20 leading into chamber 1l and threaded at its outer end for'receiving a stem=2l of a suitable vacuum andv pressure gage by means of which the operator` can yinform himself 4ofthe operating conditions existing in the system'. j

Leading'from chamber 1]; in theopposite direction tothe bore l2 is a small bore whichtermin'ates in a valve-se`atl24 adapted tov receive a vvalve 25 carried by the inner end of a valve stem 26.' Bore 22 connects chamber l1 with a chamber 27 which latter is formed in the upper lportion l0El of casing 10 and this communication Ais controlled by valve 25. Extending laterally from portion 10a is a tubular' extension A28 Vhaving a bore 29k which connects with the chamber 27. Extension 28 is adapted to have connected thereto one end of a connection `30 through which the refrigerating system is iirst exhausted of the air and then -charged with the compressible refrigerant. lVllen the system has been charged, valve is seated, connection is then removed from extension 28 and the latter is sealed by a cap 31,

Valve stein 2(3 is provided with a threaded portion Q6 whichA is s cre'iv-s'eated in the threaded bore y32v r'orined ina tubular extension 34, said bore 32 being a conftii'ia'tioii or' 'chamber 27'. Bore V'32 terminates in an enlarged bore '32 i'n which is sereni-seated an apertnred plug or packing gland which serves to securely press pac'king inaterial 3G around the ste1n26, thereby ,providing an effective seal. The oiiteillend Aof said stem -projects throughsaid plugr Aand is grooved so that it canmbe adjustedlby means of a scren7 driver. The endo'f tubular extension is exterior-ly threaded and receives a cap87. n n A In using the valve, fthe extension is screwed in position on the compressor, outlet i5 is connectedto the return pipe 1T oi' the system and outlet 2S is connected to pipe -30 ot the exhausting and charging apparatus, While stein 2l of a vacuum. and pressure gauge is screwed in bore 20. Cap isremoved and val've stem Q'Goperated to unseat valve 25, whereby the system can be exhaustedof air and cliarged with the compressiliile refrigerant. The degree ofyvacuunn as well as the pressure of the system, canbe ascertained by means ofthe gauge. Vlien vthe system has been 'charge-d to the desired degreeotpressure, stem 2G isoperated to scat valve 25 and thereby lclose the communi-1 cation between the charging apparatus and the system, whereupon the pipe 3Q of said apparatus can be disconnected from rt-he valve. Y c Y A carp 31 is placed 'on outletQS and cap 37 is placed over extension 34, thereby preventing tampering With the valve stein Q6.

The valve fitting is formed 4oi: a 'single piece, is provided with appropriate number of outlets, so that jproper connections can 'be made without ldisturbing the connection between said valve and the system.

A valve oi my improved design is simple in construction and operation and can be provided at'lmv cost.

Obviously various minor changes in the construction of my valve canrbe made and substituted for those herein shoivn and described 'Without departing from the spirit of my invention.

I claim:

1. A valve fitting `for refrigerating systems comprising a single .piece casting adapted to be connected 'to the inlet port of a coinpressor and provided with an extension adapted to be con-'nectedto one end of arefrigerati-ng system, said itting having a .plu-

Vralityof outlets for receiving respectively.

the exhausting `and charging connections and a valve-controlled bore connecting said extensions with certain ot said outlets.

ltems comprising a casting provided with inretrigerationiitting comprising a casting 2. A valve Iitting for refrigerating sys-. tems comprising a single piece casting adapted `to be connected to the inlet port ot a compressor and provided with an extension adapted lto be connected to one len'd or' a rerigerating system, a 'plurality 'of outlets for receiving respectively the exhausting. and

charging connections and 'an indicating instrument, and a ra'lv'e adj'ustably seated in said casting for controlling the communication lbfetiveen said exhausting and charging extension and said system.

31A valve ii't'tiiig for refrigerating sys.- tems comprising a single piece casting provided with an outlet adapted to be secured to the inlet .port of a reirigeratiingsystem, an intake tubular portion adapted to receive the return pipe o'fsaid system, said castii'ig beingv provided with a circulation passage coinmunicating ivith said o'utl'e'taind intake vconnections, a tubular extension formed integral with 'said casting and communicating livith said circulation passage, said exten-sionbeing adapted to be connected to an exhausting and charging apparatus, and a manipulative valve for controlling the communication Ybetween said exhausting and charging extension and said circulation passage.

4. A valve fitting for vrefrigeratii-ig systegral inlet and outlet connections adapted to be connected Withwthe respective terminals of areirigerating systenfr,l there being a circulation chamber formed in said casting communicating with said connections, a tubular extension projecting laterally "from said casting and adapted to be connected to a charging apparatus, a valve controlled bore connecting said charging extension ivith sa id chamber. y 5. A valve fitting for refrigerating systems comprising a lsingle piece casting having a body portion formed with a circulation passage and having inlet and outlet extensions communicating With said circulation passage and adapted to be connected to 'the respective terminalspojt' a retrigeratiiigsysteni, and a tubular charging and exhausting; extension, and a valve-controlled bore connecting the circulation passage anc said charging and yexhausting extension.I i

6. A charging, exhausting, and circulating refrigeration fitting comprising. a casting;

'provided 'with an integral circulation passage and a tubular charging and exhausting m0 extension, and a valve-controlled bore connecting the circulation passage4 with said charging and exhausting extension.

t. A charging, exhausting, and circulating provided with an4 integral circulation Apassage and a `plurality oij tubular extensions, one oi which is adapted to be connected to: a 4charging and `exhausting deviceA a'i'id a 'valve-controlled bore connecting said circ'u- 30 lation passage and said charging and ex controlled bore connecting said circulation haustng extension. passage and said chargn and exhausting 10 8. A charging, exhausting, and circulating extension, and a detaehab e cap for sealing refrigeration fitting comprising a vcas-tinlg; said charging and exhausting extension.

5 provided With an integral circulation pas- In testimony whereof I hereunto aix my sage and a plurality of tubular extensions, signature this 31st day of October, 1924. one of which is adapted to be connected to f f Y u charging and exhausting device, a valvef JOHN O. CARREY. 

